EP1099465A2 - Procédé et dispositif pour purifier le gaz d'échappement d'un moteur à combustion interne - Google Patents

Procédé et dispositif pour purifier le gaz d'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP1099465A2
EP1099465A2 EP00120242A EP00120242A EP1099465A2 EP 1099465 A2 EP1099465 A2 EP 1099465A2 EP 00120242 A EP00120242 A EP 00120242A EP 00120242 A EP00120242 A EP 00120242A EP 1099465 A2 EP1099465 A2 EP 1099465A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
internal combustion
combustion engine
particle filter
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00120242A
Other languages
German (de)
English (en)
Other versions
EP1099465B1 (fr
EP1099465A3 (fr
Inventor
Thorsten Dr. Düsterdiek
Gerhard Kahmann
Werner Engeler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1099465A2 publication Critical patent/EP1099465A2/fr
Publication of EP1099465A3 publication Critical patent/EP1099465A3/fr
Application granted granted Critical
Publication of EP1099465B1 publication Critical patent/EP1099465B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • F02M26/61—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/04—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by adding non-fuel substances to combustion air or fuel, e.g. additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/004—EGR valve controlled by a temperature signal or an air/fuel ratio (lambda) signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to a method and an apparatus for cleaning the Exhaust gas of an internal combustion engine according to the preamble of claim 1, 3, 8 or 10th
  • CRT system Continuous Regenerating Trap
  • a soot particle filter consists of a soot particle filter and an oxidation catalytic converter positioned in front of it.
  • NO is oxidized to NO 2 , which is subsequently used as an oxidizing agent for combusting the soot collected on the particle filter and consisting mainly of carbon.
  • the invention has for its object a method and an apparatus initially specified types so that an improved oxidation of the Particles can take place, preferably take place at a low operating temperature can.
  • the NO 2 portion and the C portion in the exhaust gas are determined, and if the proportion of the exhaust gas falls below or exceeds a certain proportion, the NO 2 portion and / or C portion in the exhaust gas is increased and / or reduced that the shares are in certain value ranges.
  • This ensures a favorable NO 2 / carbon ratio and thus a favorable condition for the oxidation of the particles, so that this can take place better and with improved combustion performance and in an environmentally friendly manner in the exhaust pipe.
  • This favoring of the functional conditions takes place continuously, which leads to a continuous effectiveness in improving the combustion of the particles.
  • the inventive method Improvement of the functional conditions takes place during a regeneration process, which is initiated when the filter is clogged by particles Exhaust gas back pressure exceeds a certain value. This will already described advantages achieved when regenerating the particle filter.
  • Claims 4 to 7 contain measures which further improve the functional conditions and lead to an increase in temperature and / or further improve the ratio of NO 2 and / or carbon.
  • the drawing shows an inventive device for cleaning the exhaust gas an internal combustion engine, in particular a diesel internal combustion engine, in schematic representation.
  • an internal combustion engine in particular a diesel internal combustion engine, designated 1
  • it has a plurality of cylinders, to which there is an air intake pipe 2 and of which there is an exhaust pipe 3 in extend in a known manner.
  • the internal combustion engine 1 are not in detail illustrated fuel injection valves associated with a fuel injection device 4.
  • the cylinders are injected directly with fuel from the injectors and with combustion air through the air intake duct 2 in a certain one Fuel / air ratio supplied, which ensures the combustion operation.
  • Branch line sections connected to the common exhaust pipe 3 by the exhaust gas discharged from the internal combustion engine 1 in the direction indicated by the arrow 5 designated flow direction is flowed through.
  • a particle filter 8 in a housing 9 in the exhaust gas line 3 arranged.
  • the internal combustion engine 1 is an exhaust gas recirculation device 11 assigned, which has a return line 12 that bypasses the internal combustion engine, which branches off from the exhaust pipe 3 and in the flow direction 5 before the Internal combustion engine 1 is connected to the air intake line 2 in the Flow direction 5 behind a throttle valve 13 in the air intake line 2, so that the combustion air in the functional mode first to the throttle valve 13 and then to Mouth of the return line 12 and reaches the cylinders, not shown.
  • the Return line 12 is an adjustable exhaust gas recirculation valve 14 arranged with which the amount of the recyclable exhaust gas is adjustable.
  • the return valve 14 is through a control line 15 with an electrical or electronic control device 16 connected to a processor (CPO).
  • the throttle valve 13 is by a Signal line 17 connected to the control device 16.
  • a temperature sensor 18 and a pressure sensor 19 are arranged in the exhaust gas line 3 in the flow direction 5 in front of the catalytic converter 6 and are connected to the electronic control device 16 by signal lines 21, 22. Furthermore, a NOx sensor 23 and a carbon sensor 24 are arranged in the exhaust gas line 3 between the catalytic converter 6 and the particle filter 8, which are also connected to the electronic control device 16 by signal lines 25, 26.
  • the NO 2 content can be calculated from the measured NOx, the air mass and the exhaust gas temperature.
  • the exhaust gas passes through the Exhaust line 3 to the particle filter 8, on which the soot particles are collected, wherein the exhaust gas flows through the exhaust pipe 3 and flows out of it.
  • the exhaust gas temperature, the pressure in the exhaust line 3 upstream of the particle filter 8, the NO 2 component and the C component in the exhaust gas are continuously monitored with sensors 18, 19, 23 and 24 and with data or data areas stored in the control device 16 compared and controlled as follows.
  • the control device 16 automatically initiates measures which lead to an increase in the temperature of the exhaust gas.
  • the throttling of the combustion air is or are increased, which is done by adjusting the throttle valve 13, and / or an exhaust gas recirculation quantity is set or the exhaust gas recirculation quantity is increased, which can be done by increasing the throttle 14 and / or the start of injection begins the injection device 4 connected to the control device 16 by a control line 27 is set to earlier.
  • the forced regeneration of the particle filter 8 can be controlled by the characteristic diagram or threshold value by the pressure sensor 19.
  • the pressure sensor 19 it is also possible to work without a pressure sensor 19 and to continuously generate the desired temperature increase by means of the above-described setting measures or the temperature increase by other measures using a favorable NO 2 / carbon ratio.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP00120242A 1999-10-07 2000-09-27 Procédé et dispositif pour purifier le gaz d'échappement d'un moteur à combustion interne Expired - Lifetime EP1099465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948156 1999-10-07
DE19948156A DE19948156A1 (de) 1999-10-07 1999-10-07 Verfahren und Vorrichtung zum Reinigen des Abgases einer Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP1099465A2 true EP1099465A2 (fr) 2001-05-16
EP1099465A3 EP1099465A3 (fr) 2002-01-23
EP1099465B1 EP1099465B1 (fr) 2006-06-14

Family

ID=7924704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120242A Expired - Lifetime EP1099465B1 (fr) 1999-10-07 2000-09-27 Procédé et dispositif pour purifier le gaz d'échappement d'un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP1099465B1 (fr)
AT (1) ATE329680T1 (fr)
DE (2) DE19948156A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033103B2 (en) 2006-09-29 2011-10-11 Denso Corporation Exhaust purification device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002349239A (ja) * 2001-05-24 2002-12-04 Isuzu Motors Ltd ディーゼルエンジンの排気浄化装置
US6843055B2 (en) * 2001-06-22 2005-01-18 Nissan Motor Co., Ltd. Regeneration of diesel particulate filter for diesel engine
DE10148915B4 (de) * 2001-08-24 2012-07-19 Volkswagen Ag Vorrichtung zur Abgasreinigung bei Dieselmotoren
DE10144958B4 (de) * 2001-09-12 2012-08-16 Volkswagen Ag Regeneration eines Partikelfilters einer Dieselbrennkraftmaschine
FR2830274B1 (fr) * 2001-09-28 2004-05-28 Renault Procede de regeneration d'un filtre a particules pour moteur a combustion interne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341832A2 (fr) * 1988-05-13 1989-11-15 Johnson Matthey Inc. Traitement de gaz d'échappement de moteur diesel
EP0859132A1 (fr) * 1995-10-30 1998-08-19 Toyota Jidosha Kabushiki Kaisha Appareil de regulation des emissions de l'echappement pour un moteur a combustion interne
WO1999030021A1 (fr) * 1997-12-04 1999-06-17 Daimler-Benz Aktiengesellschaft Procede pour l'exploitation d'un moteur diesel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332066A (ja) * 1994-06-01 1995-12-19 Matsushita Electric Ind Co Ltd ディーゼル機関の排気ガス浄化装置
GB9801023D0 (en) * 1998-01-19 1998-03-18 Johnson Matthey Plc Combatting air pollution
DE19826831A1 (de) * 1998-04-09 1999-10-14 Fev Motorentech Gmbh Verfahren zur Verminderung der Schadstoffemission von Kraftfahrzeugen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341832A2 (fr) * 1988-05-13 1989-11-15 Johnson Matthey Inc. Traitement de gaz d'échappement de moteur diesel
EP0859132A1 (fr) * 1995-10-30 1998-08-19 Toyota Jidosha Kabushiki Kaisha Appareil de regulation des emissions de l'echappement pour un moteur a combustion interne
WO1999030021A1 (fr) * 1997-12-04 1999-06-17 Daimler-Benz Aktiengesellschaft Procede pour l'exploitation d'un moteur diesel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04, 30. April 1996 (1996-04-30) & JP 07 332066 A (MATSUSHITA ELECTRIC IND CO LTD), 19. Dezember 1995 (1995-12-19) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033103B2 (en) 2006-09-29 2011-10-11 Denso Corporation Exhaust purification device

Also Published As

Publication number Publication date
ATE329680T1 (de) 2006-07-15
DE50012968D1 (de) 2006-07-27
DE19948156A1 (de) 2001-04-12
EP1099465B1 (fr) 2006-06-14
EP1099465A3 (fr) 2002-01-23

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